型钢轻骨料混凝土梁斜截面受剪承载力试验与计算  

Experiment and calculation of shear capacity of steel reinforced lightweight aggregate concrete beams

作　　者：刘凡[1] 翁晓红[1] 邵永健[1,2] 赵鸿铁[2] 夏敏[1] 

机构地区：[1]江苏省结构工程重点实验室(苏州科技学院),苏州215011 [2]西安建筑科技大学土木工程学院,西安710055

出　　处：《建筑结构》2009年第6期19-21,81,共4页Building Structure

基　　金：建设部科技研究项目(01-2-20)

摘　　要：为研究型钢轻骨料混凝土梁的受剪承载力,进行了15根型钢轻骨料混凝土梁和2根型钢普通混凝土梁的受剪性能试验。基于对于型钢普通混凝土梁斜截面受剪承载力计算公式的分析结论,提出了型钢轻骨料混凝土梁斜截面受剪承载力的计算公式模型,并利用该计算模型对17根试验梁的斜截面受剪承载力进行了分析,当计算模型中的参数ω1=ω2=ω3=1.76时,该模型可作为型钢轻骨料混凝土梁受剪承载力的平均值计算公式,此时试验实测值与公式计算值之比的平均值为1.000,标准差为0.093;当计算模型中的参数ω1=ω2=ω3=1.0时,该计算公式模型可作为型钢轻骨料混凝土梁受剪承载力的设计计算公式。而且两种情况下试验实测值与公式计算值的比值随剪跨比λ的变化平缓,说明随λ的变化,公式的可靠度基本不变。In order to study the shear capacity of steel reinforced lightweight aggregate concrete（SRLC） beams, fifteen SRLC beams and two steel reinforced normal density concrete beams were tested. The inclined section shear strength of these beams are analyzed. And the calculation formula model of the inclined section shear strength of SRLC beam is presented on basis of the analysis of calculation formula of the inclined section shear strength of steel reinforced normal density concrete beams. When the parameters ω1 = ω2 = ω3 = 1.76 in calculation formula model, this calculation formula model could be used as the average calculation formula of shear strength of SRLC beams. The average of the ratios of the measured values to the calculation values according to the calculation formula is 1.000, and the standard deviation is 0.093. When the parameters ω1 = ω2 = ω3 = 1.0 in calculation formula model, this calculation formula model could be used as the design calculation formula of shear strength of SRLC beams. Under above mentioned two conditions, the ratios of the measured values to the calculation values vary mildly as the shear span ratio A changed. This proves that the reliability of calculation formula is not variable fundamentally when A changed.

关 键 词：型钢轻骨料混凝土 梁 剪跨比 受剪承载力 计算公式 

分 类 号：TU375.1[建筑科学—结构工程] TU473.1